Now your A phase is done, now the B and C phases. Lastly move on to the 9 o'clock bolt and wind 1400 turns in the counter clock wise direction.Whew you can cut the wire. Move on to the bolt at the 6 o'clock position(without cutting the wire) and wind 1400 times in the clockwise direction. Now without cutting the wire move to the bolt at a 90 degree angle(3 o'clock) from the bolt you just wrapped and wrap 1400 turns of wire around this bolt in the counter-clockwise direction. Pick a bolt to start on wrap 28 gauge wire around clock-wise 1400 times( at 12 o' clock.This part sucks). Screw the ~1/8" diameter bolts into the 12 holes on the side. For the "Stator core" I used bolts that are ~1/8" in diameter and 2" in length. The bolts holding the cap and the stator together are 1/4-20 x 2 1/2". The stator is about 5 1/2 inches in diameter. I used 1 inch magnets (4 of them) arranged alternating N and S (N,S,N,S). The rotor was printed to fit a 1/4 inch Actobotics D-Shaft.
I printed 2 of the rotor files placed the magnets and held the two halves together with a few 4-40 nuts and bolts i had laying around.
~1/8 diameter bolts ~2 to 3 inches in length-(12 for the stator core)ġ inch cube N50 or N52 magnet-(4 for rotor poles) ~10$ eachġ/4 ID inch ball bearings 1/2" OD-(2 actobotics/sparkfun)ġ/4 inch shaft spacers-(~6 actobotics/sparkfun)ġ/2lb 28 gauge magnet wire-(1 roll will do ya')ġ/4 shaft collars/hub/sprocket-(2 depending on how you want it powered)ġ/4 D-shaft 6 to 12" long-(actobotics/sparkfun) I will be putting my smaller models of generators on here at first opportunity! Thank you!!(if you feel inclined to tip it will go towards more alternative energy prints!)ġ/4-20X2 1/4/bolts-(4 of them:stator/mounting)Ĥ-40x 1.5-(4 of them: rotor) But I can tell you spinning it at a few hundred RPM I was able to produce ~1 Watt from one of the three phases. I wish I had more time to test this to give you guys solid numbers, so I apologize. So have fun :) This is a very time intensive but gratifying project, especially for a science fair or alternative energy. THIS USES POWERFUL MAGNETS, HANDLE AT YOUR OWN RISK, YOU ARE LIABLE FOR YOUR OWN INJURIES.
This is a 3 phase (2 winding per phase) 4 pole AC generator.
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